Home / 7,214.40-10,821.42-2,216.76

Finding the Fourth Proportional to 7,214.40, 10,821.42 and 2,216.76

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Solution

The fourth proportional to 7,214.40, 10,821.42 and 2,216.76 is: 3,325.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,214.40 : 10,821.42 = 2,216.76 : x
  2. Step 2: Convert to fraction form
    7,214.40/10,821.42 = 2,216.76/x
  3. Step 3: Cross multiply
    7,214.40x = 10,821.42 × 2,216.76
  4. Step 4: Simplify right side
    7,214.40x = 23,988,450.42
  5. Step 5: Solve for x
    x = 23,988,450.42/7,214.40
  6. Step 6: Final answer
    x = 3,325.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.